Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 118 for “"Electric current"”.
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Electric current fluctuations in mesoscopic systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Electric Current Flow in Frog Atrial Trabeculae
Made available in DSpace on 2014-12-14T05:40:43Z (GMT). No. of bitstreams: 1 7821010.pdf: 8936012 bytes, checksum: f1fd68206d56bf812e223f01bcfcb0b3 (MD5) Previous issue date: 1978
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Effects of an electric current applied to metals during solidification
… undercooling in a metallic sample as more current was applied. An expansion of those experiments was commenced to A) confirm this trend and B) explore its potential causes, with the ultimate goal of being able to reliably change undercooling in a metallic material to affect its final …
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Machine Learning Approach to Predict tDCS-induced Electric Current in the Human Brain
<p>Background: Transcranial direct current stimulation (tDCS) is a promising non-invasive method for treating neurological and psychiatric disorders and enhancing cognitive function. However, the underlying mechanisms of tDCS are not fully understood, and there is no ground truth for determining, …
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Effect of temperature, density, and strength of electric current on the spectra of gases
Light may be defined as that vibration of the ether which, acting on the organ of sight, produces in us the sensation of vision. But when, on reflection, we realize that the sense of sight is the most useful of all man's senses, and recall to mind how slowly we have come to understand that kind of …
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On an Electric-Current Carrying Discontinuity Driven Through Non-Conducting Gas by a Lorentz Force
Made available in DSpace on 2014-12-09T18:12:26Z (GMT). No. of bitstreams: 1 7000851.pdf: 3689852 bytes, checksum: 64979bda9508b649e49d38b0027bc737 (MD5) Previous issue date: 1969
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The Biologically Effective Electric Current Distribution in Rana Pipiens Eggs Resulting From Applied Circularly Polarized Electric Currents
Made available in DSpace on 2014-12-05T22:14:33Z (GMT). No. of bitstreams: 1 0009150.pdf: 7946644 bytes, checksum: c7c90b9102778bd128c82c762a1f3a4b (MD5) Previous issue date: 1954
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Elimination of PZT thin film breakage caused by electric current arcing and intrinsic differential strains during poling
… to incomplete metal layer coverage. Second, the electrical arcing that is frequently taking place during poling sends a mechanical shock wave through the substrate. Electrical arcing is caused by metal overspray during the sputtering process. Poling breakage was experimentally reduced by 70% by …
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The Theoretical and Experimental Determination of The Input Impedance of a Small Loop of Electric Current Immersed in an Anisotropic Plasma
Made available in DSpace on 2014-12-08T22:24:03Z (GMT). No. of bitstreams: 1 6706601.pdf: 3786623 bytes, checksum: 8a40360105e38f5e24dde3da0172d3ae (MD5) Previous issue date: 1966
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A study of the lines of flow and the equipotential lines in a plate conductor
… represent in the z plane the lines of flow of an electric current in a plate conductor around a circle of unit radius if the constant k is unity and around an ellipse of the form x²/1 + y²/k² = 1 which is oblate if the constant k is greater than unity and prolate if the constant k is less than …
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Modeling the Dynamics of Liquid Metal in Fusion Liquid Walls Using Maxwell-Navier-Stokes Equations
… fusion reactors. In the Z-pinch fusion process, electric current travels through a plasma column and enters into a pool of liquid metal. The current flowing through the liquid metal generates Lorentz force, which deforms the free surface of the liquid metal. Modeling this phenomenon is essential …
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Sonoelectrochemical synthesis of submicron metal powders
… In this technique, alternating pulses of electric current and power ultrasound are applied to an electrochemical cell to create and suspend particles in the electrolyte. The pulsed technique largely separates the particle morphology defining physical action of electrochemistry and …
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Learning science from technology
… described the effects of a teaching approach on electric current with learners aged 11 - 15 years. It was based on a constructivist-developmentalist view of learning which recognises that learners bring prior knowledge to science lessons. The nature of that knowledge and how it is incorporated …
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Electrochemically driven mechanical energy harvesting
… compressed to the tensed electrode to generate electric current. Unbending the device reverses the ion flux, generating electrical current in the opposite direction. The thermodynamic analyses reveal that the ideal energy-harvesting efficiency of this device is dictated by the Poisson's ratio of …
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Electrochemical Phase Formation of Ni and Ni-Fe Alloys in a Magnetic Field
… same direction, an increase of the Ni partial current with the magnetic field was obtained. When they act in opposite directions, the Ni current was influenced just at the beginning of deposition (first 10 seconds). At longer times, the magnetic field has no effect on the Ni current. However, …
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A Single-Field Finite-Difference Time-Domain Formulations for Electromagnetic Simulations
… transverse magnetic, two-dimensional transverse electric and one-dimensional electromagnetic problems are solved. Fields generated by a current sheet and a filament electric current are calculated for one and two-dimensional formulations, respectively. Performance analyses of the single-field …
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Design of Multilayer Optical Media: Organic Photovoltaics and Optical Data Storage
… In solar photovoltaics, light is converted to electric current by generating charge carriers in semiconductors. These charge carriers are then moved to opposing electrodes generating an electric current. These components: semiconductor, electrodes, and a supporting substrate form a layered …
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The Electrical Stimulation of Bone Formation.
In 1957 Fukada demonstrated that bone has piezoelectric properties, that is, bone produces electric current and potential in response to mechanical forces. The same phenomena were reported in 1962 by Bassett who found that the potentials developed in the area of compression were negative, and …
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